This is a Yiddish expression meaning “old wives tale.” This is one of many terms used in describing commonly held misconceptions, dogma, superstition, and beliefs that are unusual but widely believed to be true. “Don’t go swimming for a half hour after you eat,” “don’t cross your eyes or they’ll get stuck in that position,” ”don’t wear someone else’s glasses or it’ll ruin your eyes…” the list is endless. Many of these widely held falsehoods are found in orthopedic medicine and this is a fun term to describe them.